GASTER 56 N AW
15
EN
Combustion analysis
A fume sampling point has been included inside the boiler in the upper part of the anti-
backflow device (see fig. 6).
To take the sample:
1.
Remove the upper panel of the boiler
2.
Remove the insulation covering the anti-backflow device
3.
Open the fume sampling point 1 of fig. 6;
4.
Insert the probe;
5.
Set the boiler temperature to maximum.
6.
Wait 10-15 minutes for the boiler to stabilise*
7.
Take the measurement.
fig. 6 - Combustion analysis
A
Analyses made with an unstabilised boiler can cause measurement errors.
Burner assembly removal and cleaning
To remove the burner assembly:
1.
Disconnect the power and turn off the gas ahead of the boiler;
2.
Remove the
gas valve
electronic controller “1” (fig. 7);
3.
Disconnect the electrode assembly
cables
"2”;
4.
Unscrew the ring
“3”
fixing the gas supply pipe ahead of the gas valve;
5.
Undo the two nuts
“4”
fixing the combustion chamber door to the cast iron elements
of the boiler.
6.
Remove the burner assembly and combustion chamber door.
Then check and clean the burners. Only use a non-metallic brush or compressed air to
clean the burners and electrodes; never use chemical products.
fig. 7
Pilot burner assembly
1
Combustion chamber door
2
Inspection door
3
Pilot burner
4
Ignition electrode
5
Detection electrode
6
Pilot nozzle
7
High voltage cable
8
Gas supply pipe
1
3
2
4
4
1
fig. 8 - Pilot burner
cod. 3541A171 - Rev. 01 - 03/2018
